2014 revised and simplified measurements for foam sandwich VJs built up to 2013 (original style hulls built to 1990s measurements):
Hull:
Length overall: 3518mm
Front of bow to centre of mast at deck: 1150mm maximum
Front of bow to front end of opening of centreboard case: 1549mm minimum
Height of deck at the mast must not exceed the datum line. Datum line on plans is measured from top of deck at stem to a point 334mm from bottom of keel at transom (diagram to follow)
Length of cockpit along centreline of hull: 2315mm maximum
Width of bow at foremost position: 76mm maximum
Vertical height of stem at bow: 280mm +/- 6mm
(Stem must be at right angles to datum line)
Width of deck outside planking 2000mm from transom: 1073mm maximum
Width of deck at transom outside planking: 860mm +/- 6mm
Depth of transom at chine: 186mm +/- 6mm
Beam at chine 502mm from stem: 403mm +/- 10mm
Beam at chine 2000mm from transom: 911 +/- 6mm
Width of transom at chine (outside planking): 733 +/- 6mm
Transom must be at right angles to datum line
Depth of vee at transom: 32mm +/- 3mm
Depth of vee 2000mm from transom: 57mm +/- 10mm
Spring at transom: 143mm +/- 13mm
Spring at Stem: 140mm +/- 13mm
Width of gunnels measured at underside: 32mm maximum
Curvature, convex or concave across bottom from keel to chine: 6mm maximum
Weight of hull including fixed fittings (weighed empty clean and dry): 40.8kg
Curvature convex or concave on sides from chine to underside of gunwhales from aft end of centreboard case to to transom: 6mm maximum
Curvature convex or concave on sides from chine to underside of gunwhales from aft end of centreboard case to stem: 35mm maximum
Length of bowsprit outside front of bow: 914mm maximum
Bowsprit measurements includes any fittings, material optional
Hull materials: plywood, fibreglass, foam sandwich composite allowed
Centreboard: depth below the bottom of hull must not exceed 900mm
Centreboard material optional, foil wings not allowed on centreboard
no chord length or width restrictions on centreboard
Rudder: material optional, foil wings not allowed
Rudder pivoting point must not exceed 50mm from transom
Rudder depth and chord length/width: no restrictions
Spars:
Mast boom spinnaker pole dimensions for pre-2013 hulls available soon
Mast: material aluminium or composite
Boom: material aluminium or composite, max depth 130mm
Spinnaker pole: material aluminium or composite
length of spinnaker pole: 2750mm max measured from mast to end of fittings on pole
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